Process for the preparation of cyclic diketones
US7135574B2 · kind B2 · utility
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2Claims
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Assignee
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Key dates
| Filing date | Feb 11, 2005 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Feb 11, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of compounds of formula Iwherein the substituents are as defined in claim 1, by conversion of a compound of formula IIreaction of that compound with a compound of formula IVX—C(O)—Q, (IV)wherein X is a leaving group, to form a compound of formula Vand treatment of that compound in the presence of a base with catalytic amounts of cyanide ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.